A massive topic, and by far, the most important in Geometry. To view all videos, please visit https://DontMemorise.com . read more
Demonstrate why the sum of the measures of the interior angles of any quadrilateral is 360 0 Provide examples that demonstrate how to use this theorem to solve for unknown variables and unknown angle measurements. This packet should help a learner seeking to understand the sum of the interior angles of a quadrilateral. read more
alway sum of angle of qudrilateral is 360 The sum of the angles in a quadrilateral is 360o. read more
Thanks for the A2A! This is my favourite proof (it relies on triangle angles = 180 proof though) So you can see it makes two triangles, each of 180 degrees. The sum of this is 360 degrees. read more
Proof: The sum of the measures of the interior angles of any quadrilateral can be found by breaking the quadrilateral into two triangles. Since the measure of the interior angles of any triangle equals 180 degrees, each of the two triangles will contribute 180 degrees to the total for the quadrilateral. read more